Question

An isosceles right triangle has area 8 cm2

. The length of its hypotenuse is

(a) √32 (b) √16 (c) √48 (d) ​

Answer 1

Answer:

Given, area of an isosceles right triangle = 8 cm2

Area of an isosceles triangle = 1/2 (Base x Height)

⇒  8 = 1/2 (Base x Base)

[∴ base = height, as triangle is an isosceles triangle]

⇒ (Base)2 =16 ⇒  Base= 4 cm

In ΔABC, using Pythagoras theorem

AC2 = AB2 + BC2 = 42 + 42 = 16 + 16

⇒ AC2 = 32 ⇒  AC = √32 cm

[taking positive square root because length is always positive]

Hence, the length of its hypotenuse is √32 cm.

This is your answer.

Hope this helps you!

Answer 2

Answer:

formula for finding the area of isosceles triangle

1/2× base × height